An eddy current sensor

Abstract

The utility model discloses an eddy current sensor, the eddy current sensor includes mounting bracket, adjustment subassembly and sensor, and adjustment subassembly is located on the mounting bracket and is movable along the up and down direction relative to the mounting bracket, and the sensor is located on the adjustment subassembly, and adjustment subassembly drives the sensor movable along the up and down direction relative to the mounting bracket, so as to adjust the position between sensor and the measured piece, and the sensor includes probe and processing component, and the probe is connected with processing component through wire, and the probe includes insulating shell, coil and core, and the core and coil are all located in the insulating shell, and the coil is encircled on the outer peripheral surface of core, and the coil is connected with processing component, so that the induced current generated by the coil flows into processing component, and processing component is used for converting the induced current generated by the coil into analog voltage or digital signal. The eddy current sensor of the utility model has the advantages of simple structure, high measurement precision etc.

Description

Technical Field

[0001] The utility model relates to the field of eddy current sensors, and specifically, to an eddy current sensor. Background Art

[0002] In the application of eddy current sensors, the distance between the eddy current sensor and the measured object is a key prerequisite for the accurate measurement of the sensor, ensuring that the output signal truly reflects the situation of the measured object, reducing errors caused by external factors such as temperature and electromagnetic interference, guaranteeing the measurement accuracy, meeting the production process standards and the requirements of automatic control, providing accurate data support for the production process, and achieving efficient and accurate operation.

[0003] In the related art, a ranging tool is used to adjust the distance between the eddy current sensor and the measured object, with cumbersome operations and low adjustment efficiency. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0005] To this end, an embodiment of the present invention provides an eddy current sensor with a simple structure, convenient operation, and high adjustment efficiency.

[0006] The eddy current sensor according to an embodiment of the present invention includes: a mounting frame; an adjustment component, which is provided on the mounting frame and is movable relative to the mounting frame in the up and down direction; a sensor, which is provided on the adjustment component, and the adjustment component drives the sensor to be movable relative to the mounting frame in the up and down direction so as to adjust the position between the sensor and the measured object. The sensor includes a probe and a processing component. The probe is connected to the processing component through a wire. The probe includes an insulating shell, a coil, and an iron core. The iron core and the coil are both provided inside the insulating shell. The coil is wound around the outer peripheral surface of the iron core. The coil is connected to the processing component so that the induced current generated by the coil flows into the processing component. The processing component is used to convert the induced current generated by the coil into an analog voltage or a digital signal.

[0007] For the eddy current sensor of the embodiment of the present utility model, an adjustment component and a sensor are provided. By adjusting the distance between the sensor and the measured object through the adjustment component, the error between the distances of the sensor and the measured object is reduced, and the measurement accuracy is significantly improved.

[0008] In some embodiments, the mounting frame includes a mounting plate and a plurality of telescopic members. The mounting plate is provided above the telescopic members, and the plurality of telescopic members are arranged at intervals along the circumference of the mounting plate. The telescopic members perform telescopic movement in the up and down direction so as to drive the mounting plate to move in the up and down direction. The adjustment component is provided on the mounting plate and is movable relative to the mounting plate in the up and down direction.

[0009] In some embodiments, the adjusting component includes: a connecting rod, which is a vertical rod extending in the up-and-down direction and is inserted through the mounting bracket. The connecting rod is movable relative to the mounting bracket in the up-and-down direction, and the connecting rod is rotatable relative to the mounting bracket about the up-and-down direction; a mounting member, which is provided below the connecting rod and is used to mount the sensor, so that the connecting rod drives the sensor to move or rotate through the mounting member.

[0010] In some embodiments, a scale is provided on the connecting rod. The scale gradually increases from bottom to top, and the lower end of the connecting rod is the zero scale.

[0011] In some embodiments, there are multiple scales on the connecting rod, and the multiple scales are arranged at intervals along the circumferential direction of the connecting rod.

[0012] In some embodiments, the eddy current sensor further includes a fastener, which passes through the mounting member and abuts against the outer peripheral surface of the connecting rod, so that the connecting rod is mounted on the mounting member through the fastener.

[0013] In some embodiments, the upper end surface of the mounting member has a mounting groove for mounting the processing component. The mounting member has a mounting hole penetrating through the mounting groove in the up-and-down direction, and the mounting hole is used to mount the probe.

[0014] In some embodiments, the mounting member further includes: a first driving member, which is provided in the mounting groove and abuts against the processing component, so that the processing component is mounted in the mounting groove through the first driving member; a second driving member, which is provided in the mounting hole and abuts against the insulating shell of the probe, so that the probe is mounted in the mounting hole through the second driving member.

[0015] In some embodiments, at least one of the outer peripheral surface or the inner peripheral surface of the insulating shell is provided with a magnetic isolation layer.

[0016] In some embodiments, the processing component includes a preamplifier and an electronic module. The preamplifier is respectively connected to the coil and the electronic module, so that the electrical signal generated by the coil is amplified by the preamplifier and then the amplified electrical signal is transmitted into the electronic module. The electronic module is used to convert the electrical signal into an analog voltage or a digital signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the eddy current sensor according to an embodiment of the present invention.

[0018] Figure 2It is a schematic structural diagram of the sensor of the eddy current sensor according to an embodiment of the present invention.

[0019] 100. Eddy current sensor; 1. Mounting frame; 11. Mounting plate; 12. Telescopic member; 2. Adjustment assembly; 21. Connecting rod; 22. Mounting member; 221. Mounting groove; 222. Mounting groove; 3. Sensor; 31. Probe; 311. Insulating shell; 312. Coil; 313. Iron core; 32. Processing component; 4. Fastening member; 41. First driving member; 42. Second driving member; 5. Measured part. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0021] The eddy current sensor 100 according to an embodiment of the present invention will be described below with reference to the drawings.

[0022] As Figure 1-2 shown, the eddy current sensor 100 according to an embodiment of the present invention includes a mounting frame 1, an adjustment assembly 2 and a sensor 3.

[0023] The adjustment assembly 2 is provided on the mounting frame 1 and is movable relative to the mounting frame 1 in the up and down direction. Specifically, as Figure 1-2 shown, the mounting frame 1 serves as the basic support structure of the entire eddy current sensor 100 and is usually made of a high-strength and corrosion-resistant non-metallic material to ensure a stable form and performance in various complex working environments. The adjustment assembly 2 is provided on the mounting frame 1 and is movable in the up and down direction on the mounting frame 1.

[0024] The sensor 3 is provided on the adjustment assembly 2. The adjustment assembly 2 drives the sensor 3 to be movable relative to the mounting frame 1 in the up and down direction so as to adjust the position between the sensor 3 and the measured part 5. The sensor 3 includes a probe 31 and a processing component 32. The probe 31 is connected to the processing component 32 through a wire. The probe 31 includes an insulating shell 311, a coil 312 and an iron core 313. Both the iron core 313 and the coil 312 are provided in the insulating shell 311. The coil 312 is wound around the outer peripheral surface of the iron core 313. The coil 312 is connected to the processing component 32 so that the induced current generated by the coil 312 flows into the processing component 32. The processing component 32 is used to convert the induced current generated by the coil 312 into an analog voltage or a digital signal. Specifically, as Figure 1-2 shown, the sensor 3 is mounted on the adjustment assembly 2. The adjustment assembly 2 is driven by the mounting member 22 to move in the up and down direction on the mounting frame 1, thereby conveniently adjusting the relative position between the sensor 3 and the measured part 5 and ensuring that the sensor 3 can detect the measured part 5 at the optimal working distance and angle.

[0025] The probe 31 is composed of an insulating shell 311, a coil 312 and an iron core 313. The insulating shell 311 is usually made of high-performance engineering plastics or ceramic materials, having good insulation performance, high-temperature resistance and mechanical strength, and can effectively protect the internal coil 312 and iron core 313 from external environmental interference and damage. The iron core 313 and the coil 312 are installed inside the insulating shell 311. The coil 312 is closely and evenly wound around the outer peripheral surface of the iron core 313, forming an efficient electromagnetic induction structure. When the probe 31 approaches the measured object 5, the eddy current on the surface of the measured object 5 will generate an induced electromotive force in the magnetic field formed by the iron core 313 and the coil 312, and then an induced current will be generated in the coil 312. The probe 31 is electrically connected to the processing component 32 through a wire, ensuring that the induced current generated in the coil 312 can flow into the processing component 32. After the induced current flows into the processing component 32, the processing component 32 will perform a series of processes such as amplifying, filtering, and shaping the current signal by using algorithms and circuits, and convert it into an analog voltage signal. And the processing component 32 converts the analog voltage signal into a digital signal through an analog-to-digital converter, so as to interface with the subsequent data acquisition system or control system. Thus, in this way, the eddy current sensor 100 can accurately convert the physical parameters of the measured object 5, such as displacement, thickness, vibration, etc., into measurable electrical signals.

[0026] In the eddy current sensor 100 of the embodiment of the present utility model, an adjustment component 2 and a sensor 3 are provided. By adjusting the distance between the sensor 3 and the measured object 5 through the adjustment component 2, the distance error between the sensor 3 and the measured object 5 can be controlled within a small range, effectively avoiding measurement errors caused by improper distance, and significantly improving the measurement accuracy. In addition, an iron core 313 is provided inside the sensor 3. Through the high magnetic permeability characteristic of the iron core 313, not only can the magnetic field generated by the coil 312 be concentrated and guided, enhancing the magnetic field intensity and reducing leakage, improving the sensing ability and measurement accuracy of the measured object, making the magnetic field distribution more uniform, improving the linear relationship between the output signal and the measured physical quantity, and reducing the non-linear error. At the same time, the iron core 313 can suppress external magnetic field interference, enabling the sensor 3 to work stably in a complex environment, and can improve the electromagnetic induction efficiency, reduce energy loss, thereby enhancing the signal output, increasing the sensitivity, optimizing the energy conversion efficiency, and extending the service life of the sensor 3.

[0027] In some embodiments, the mounting bracket 1 includes a mounting plate 11 and a plurality of telescopic members 12. The mounting plate 11 is provided above the telescopic members 12 and the plurality of telescopic members 12 are arranged at intervals along the circumference of the mounting plate 11. The telescopic members 12 perform telescopic movement in the up and down direction, so as to drive the mounting plate 11 to move in the up and down direction. The adjustment component 2 is provided on the mounting plate 11 and is movable relative to the mounting plate 11 in the up and down direction. Specifically, as Figure 1-2As shown, the mounting plate 11 is a horizontal plate extending in the left - right direction. There are two telescopic members 12, and the two telescopic members 12 are arranged at intervals in the left - right direction. The upper ends of the telescopic members 12 are connected to the mounting plate 11. Thus, when the mounting plate 11 is stressed, the force is evenly distributed, avoiding the situation of structural damage caused by local stress concentration. Each telescopic member 12 has the ability to perform telescopic movement in the up - down direction, and the implementation method can be a high - precision hydraulic cylinder, an electric push rod or a precise screw drive mechanism, etc. When the telescopic member 12 performs telescopic movement, it will synchronously drive the mounting plate 11 to move smoothly in the up - down direction, thereby providing the up - down position adjustment function for the entire sensor 3 system to meet the measurement requirements of the measured part 5 at different heights. The adjustment component 2 is arranged on the mounting plate 11 and the adjustment component 2 can move in the up - down direction on the mounting plate 11. The sensor 3 is firmly installed on the adjustment component 2. Thus, by means of the up - down movement function of the adjustment component 2 relative to the mounting plate 11 and the up - down movement of the mounting plate 11 driven by the telescopic member 12 in the mounting frame 1, it is ensured that the optimal working distance is maintained between the sensor 3 and the measured part 5.

[0028] In some embodiments, the adjustment component includes a connecting rod 21 and a mounting member 22.

[0029] The connecting rod 21 is a vertical rod extending in the up - down direction and is inserted through the mounting frame 1. The connecting rod 21 is movable relative to the mounting frame 1 in the up - down direction and is rotatable relative to the mounting frame 1 about the up - down direction. The mounting member 22 is arranged below the connecting rod 21 and the mounting member 22 is used to mount the sensor 3, so that the connecting rod 21 can drive the sensor 3 to move or rotate through the mounting member 22.

[0030] Specifically, as Figure 1-2 shown, the connecting rod 21 is a vertical rod in the up - down direction and is inserted through the mounting plate 11. The mounting member 22 is arranged at the lower end of the connecting rod 21 and the sensor 3 is mounted on the mounting member 22. The connecting rod 21 has the ability of two - way movement on the mounting plate 11. On the one hand, the connecting rod 21 can move relative to the mounting frame 1 in the up - down direction to meet the requirement of precise measurement of the sensor 3 at different height positions. On the other hand, the connecting rod 21 can also rotate relative to the mounting frame 1 about the up - down direction, enabling the sensor 3 to adjust its position in the horizontal plane to adapt to the measured parts 5 with different shapes and orientations.

[0031] In some embodiments, a scale is provided on the connecting rod 21 (not shown in the figure), and the scale increases gradually from bottom to top with the lower end of the connecting rod 21 being the zero scale. Specifically, a scale is set on the connecting rod 21. The scale starts from the lower end of the connecting rod 21 and increases gradually from bottom to top, and the lower end of the connecting rod 21 is clearly set as the zero scale. Thus, in actual operation, the staff can precisely control the moving distance of the sensor 3 in the up and down direction by observing the change of the scale on the connecting rod 21 according to the measurement requirements. For example, when it is necessary to adjust the sensor 3 to a specific height from the measured part 5, just refer to the scale value and move the connecting rod 21 to the corresponding position, which greatly improves the accuracy and efficiency of the adjustment and avoids the errors caused by adjusting by feeling. Secondly, the existence of the scale facilitates the standardized operation and recording in different measurement scenarios. In industrial production, for the same type of measured part 5, measurements are often required multiple times, and the position of the sensor 3 may need to be kept consistent each time. Through the scale on the connecting rod 21, the staff can accurately record the position of the sensor 3 during each measurement and quickly return to the same position during subsequent measurements, ensuring the consistency and comparability of the measurement results. In addition, the scale design also helps to quickly locate and adjust the position of the sensor 3 during equipment maintenance and calibration. When the sensor 3 needs to be recalibrated due to long-term use or other reasons, the staff can quickly adjust the sensor 3 to the correct position according to the preset scale value, reducing the equipment downtime and improving the production efficiency.

[0032] In some embodiments, there are multiple scales on the connecting rod 21, and the multiple scales are arranged at intervals along the circumferential direction of the connecting rod 21. Specifically, scales are provided on the front, back, left, and right four surfaces of the connecting rod 21. Since the connecting rod 21 may rotate around the up and down direction during the adjustment process, if the scale is only set in a single direction, when the connecting rod 21 rotates to a certain angle, it may be difficult for the operator to clearly observe the scale, thus affecting the accuracy of the position adjustment of the sensor 3. By adopting the method of arranging multiple scales at circumferential intervals, no matter what angle the connecting rod 21 rotates to in the horizontal plane, the operator can clearly see at least one scale from different orientations, greatly improving the convenience and accuracy of the operation.

[0033] In some embodiments, the eddy current sensor 100 further includes a fastener 4. The fastener 4 passes through the mounting member 22 and abuts against the outer peripheral surface of the connecting rod 21 so that the connecting rod 21 is mounted on the mounting member 22 through the fastener 4. Specifically, as Figure 1As shown, the fastener 4 can be a screw or a bolt. A threaded hole extending in the horizontal direction is provided on the mounting plate 11. The fastener 4 is inserted into the threaded hole and threadedly engaged with the threaded hole. One end of the fastener 4 abuts against the outer peripheral surface of the connecting rod 21, so that the connecting rod 21 is mounted on the mounting plate 11. When measuring the displacement of mechanical parts of different sizes, the operator can quickly change the height of the connecting rod 21 by loosening or tightening the fastener 4, and then adjust the distance between the sensor 3 and the measured part to meet the requirements of different measurement scenarios. Or if the connecting rod 21 or the mounting member 22 is damaged or needs to be replaced, the operator only needs to loosen the fastener 4, and then they can be easily disassembled, and then new components can be replaced, and then the fastener 4 can be tightened again to complete the replacement, which greatly shortens the maintenance time of the equipment and improves the work efficiency.

[0034] In some embodiments, the upper end surface of the mounting member 22 has a mounting groove 221 for mounting the processing component 32. The mounting member 22 has a mounting hole extending in the up-down direction through the mounting groove 221 for mounting the probe 31. Specifically, as Figure 1 shown, the upper end surface of the mounting member 22 has a mounting groove 221, and the inner peripheral surface of the mounting groove 221 matches the outer dimension of the processing component 32, so that the processing component 32 is mounted in the mounting groove 221. The mounting member 22 also has a mounting hole extending in the up-down direction through the mounting groove 221, and the inner peripheral contour of the mounting hole matches the outer peripheral contour of the probe 31, so that the probe 31 can be mounted in the mounting hole. At the same time, the diameter and depth of the mounting hole are also precisely matched according to the specifications of the probe 31 and the measurement requirements, ensuring that the probe 31 can fit tightly with the mounting member 22 after installation without shaking or gaps, thereby ensuring the accuracy of the measurement data.

[0035] In some embodiments, the mounting member 22 further includes a first driving member 41 and a second driving member 42.

[0036] The first driving member 41 is provided in the mounting groove 221 and abuts against the processing component 32, so that the processing component 32 is mounted in the mounting groove 221 through the first driving member 41. Specifically, as Figure 1 shown, the first driving member 41 can be a bolt. A threaded hole extending in the front-back direction through the mounting plate 11 is provided on the mounting plate 11. The first driving member 41 is inserted into the threaded hole and threadedly engaged with the threaded hole. One end of the first driving member 41 is inserted into the mounting groove 221 and abuts against the processing component 32, so that the processing component 32 is stably mounted in the mounting groove 221, and the processing component 32 will not be displaced or loosened due to external vibration or interference, thereby ensuring the accuracy and reliability of signal processing.

[0037] The second driving member 42 is provided in the mounting hole and abuts against the insulating housing 311 of the probe 31, so that the probe 31 is mounted in the mounting hole through the second driving member 42. Specifically, as Figure 1 shown, the second driving member 42 can be a bolt. A threaded hole penetrating the mounting plate 11 in the front-rear direction is provided on the mounting plate 11. The second driving member 42 is inserted into the threaded hole and is in threaded cooperation with the threaded hole. One end of the second driving member 42 is inserted into the mounting groove 221 and abuts against the insulating housing 311 of the probe 31, so that the insulating housing 311 of the probe 31 is stably mounted in the mounting groove 221, preventing the probe 31 from loosening or falling off due to vibration or external force during operation.

[0038] In actual application scenarios, the eddy current sensor 100 is often in a complex electromagnetic environment. There may be various devices generating magnetic fields around, such as motors, transformers, power transmission lines, etc. These external magnetic fields will interfere with the magnetic field inside the sensor 3 in the way of electromagnetic induction. In some embodiments, at least one of the outer peripheral surface or the inner peripheral surface of the insulating housing 311 is provided with a magnetic isolation layer (not shown in the figure).

[0039] Specifically, magnetic isolation layers are provided on both the inner and outer peripheral surfaces of the insulating housing 311, and the magnetic isolation layers can effectively block the entry of external magnetic fields. For example, in a large factory, when multiple large motors are running simultaneously, a strong alternating magnetic field will be generated. Without the protection of the magnetic isolation layer, these external magnetic fields will interfere with the eddy current magnetic field formed between the probe 31 inside the sensor 3 and the measured object, resulting in deviation of the signal output by the sensor 3 and unable to accurately reflect the true state of the measured object. The existence of the magnetic isolation layer can greatly weaken the influence of the external magnetic field, enabling the sensor 3 to work stably in a complex electromagnetic environment. Or the magnetic isolation layer prevents the internal magnetic field of the probe 31 from leaking into the surrounding environment. When the eddy current sensor 100 works, an eddy current will be generated between the probe 31 and the measured object, and then a specific magnetic field will be formed. If the internal magnetic field leaks into the surrounding environment, it may not only interfere with the surrounding precision electronic devices and affect their normal operation, but also be misdetected by other magnetic field sensors 3, causing confusion in measurement data. By providing a magnetic isolation layer on the inner peripheral surface of the insulating housing 311, the internally generated magnetic field can be restricted within the limited space between the probe 31 and the measured object, reducing magnetic field leakage.

[0040] In some embodiments, the processing component 32 includes a preamplifier and an electronic module. The preamplifier is connected to the coil 312 and the electronic module respectively, so that the electrical signal generated by the coil 312 is amplified by the preamplifier and then transmitted to the electronic module. The electronic module is used to convert the electrical signal into an analog voltage or a digital signal. Specifically, in the eddy current sensor 100, the preamplifier amplifies the electrical signal to an appropriate intensity and transmits it to the electronic module. The electronic module first filters and shapes the signal, and then converts it into an analog voltage for use by analog devices as needed, or converts it into a digital signal through an analog-to-digital converter for convenient processing by digital devices. The two cooperate with each other to ensure the high-performance measurement of the sensor 3 in many fields.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0042] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly defined or limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact via an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher level than the second feature in terms of horizontal height. A first feature being "under", "beneath" and "underneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower level than the second feature in terms of horizontal height.

[0045] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An eddy current sensor, characterized in that, include: Mounting rack; An adjustment component is mounted on the mounting frame and is movable relative to the mounting frame in the vertical direction; A sensor is mounted on the adjustment assembly, which allows the sensor to move vertically relative to the mounting bracket to adjust its position relative to the measured object. The sensor includes a probe and a processing assembly. The probe is connected to the processing assembly via a wire. The probe includes an insulating shell, a coil, and an iron core. The iron core and the coil are both housed within the insulating shell. The coil is wrapped around the outer circumference of the iron core and is connected to the processing assembly so that the induced current generated by the coil flows into the processing assembly. The processing assembly converts the induced current generated by the coil into an analog voltage or a digital signal.

2. The eddy current sensor according to claim 1, characterized in that, The mounting bracket includes a mounting plate and multiple telescopic components. The mounting plate is positioned above the telescopic components, and the multiple telescopic components are spaced apart circumferentially along the mounting plate. The telescopic components extend and retract in the vertical direction to move the mounting plate in the vertical direction. The adjustment component is positioned on the mounting plate and is movable relative to the mounting plate in the vertical direction.

3. The eddy current sensor according to claim 1, characterized in that, The adjustment components include: A connecting rod, which is a vertical rod extending in the vertical direction and passing through the mounting frame, is movable in the vertical direction relative to the mounting frame, and is rotatable about the vertical direction relative to the mounting frame. The mounting component is located below the connecting rod and is used to mount the sensor so that the connecting rod can drive the sensor to move or rotate via the mounting component.

4. The eddy current sensor according to claim 3, characterized in that, The connecting rod is provided with a scale, which gradually increases from bottom to top, and the lower end of the connecting rod is the zero mark.

5. The eddy current sensor according to claim 4, characterized in that, The connecting rod has multiple graduations, which are spaced apart circumferentially along the connecting rod.

6. The eddy current sensor according to claim 3, characterized in that, It also includes fasteners that pass through the mounting member and abut against the outer peripheral surface of the connecting rod, so that the connecting rod is mounted on the mounting member by means of the fasteners.

7. The eddy current sensor according to claim 3, characterized in that, The upper end face of the mounting component has a mounting groove for mounting the processing component, and the mounting component has a mounting hole that extends through the mounting groove in the vertical direction for mounting the probe.

8. The eddy current sensor according to claim 7, characterized in that, The mounting component also includes: A first driving member is disposed within the mounting slot and abuts against the processing component, so that the processing component is mounted within the mounting slot via the first driving member; A second driving member is disposed in the mounting hole and abuts against the insulating shell of the probe, so that the probe is mounted in the mounting hole via the second driving member.

9. The eddy current sensor according to claim 1, characterized in that, At least one of the outer peripheral surface or the inner peripheral surface of the insulating shell is provided with a magnetic shielding layer.

10. The eddy current sensor according to claim 1, characterized in that, The processing component includes a preamplifier and an electronic module. The preamplifier is connected to the coil and the electronic module respectively, so that the electrical signal generated by the coil is amplified by the preamplifier and then sent to the electronic module. The electronic module is used to convert the electrical signal into an analog voltage or a digital signal.

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